Malware "your system is infected with (3) viruses!"
This popped up on Safari (Chrome, too). URL is cloudfront.net, (preceded by dacwkow4vc62c). screencap:
Question: do I have to dig in to the system files and trash any preferences, etc., or is the merely a web page without any OS tentacles? Google search for dacwkow4vc62c together with cloudfront shows nothing; phone number has warnings, but could not find anything beyond that. Was in Google news, on USA Today page, scrolling, when this popped open and opened a new tab. In other words, is this more insidious than it appears or can I safely ignore it?
iMac with Retina 5K display, macOS High Sierra (10.13), Time Capsule 3rd Gen w/6TB drive